Flashing amber power light means bad PSU.

The #2 light means bad PCI device, but you said you had none of those installed.

2

PCI

PCI device configuration or failure

Remove all external peripherals and all internal PCI devices. If the fault continues, contact technical support. If the fault stops, reconnect the components one at a time until the fault re-occurs, then contact technical support.

Thanks speedstep but the above links only brings me to my g/f's tag # and warranty which isn't valid.

Does anyone else have any idea what could be the problem the pc does work but takes a long time to finally get to the green light after the startup with the amber flashing light, once it finally boots to the desktop the pc works fine but with the #2 light still on ?

Thanks

Thanks Brad 

So can a faulty PSU still startup the pc after a certain time as I mentioned above ?

Also does remove all external peripherals including the mouse, keyboard, printer, and sound connectors

Much appreciated

 

I forgot to ad seeing one of my computers is the same as my g/f and I swap out my PSU and try it on hers if all works right

Would this psu be the one I need to buy

https://www.newegg.ca/p/2AN-001M-00551?Description=Dell%20Optiplex%20755%20Power%20Supply&cm_re=Dell_Optiplex%20755%20Power%20Supply-_-9SIAHFJ87C0326-_-Product

My optiplex is the first one on the left,    Thanks again

 

Hi speedstep Well having checked your link it would appear that the PSU on Newegg isn't offered in Canada where I reside but whoa what a difference in price oh well so can you tell me if this one is the same PSU available at Newegg Canada and that it is the right one @ https://www.newegg.ca/p/1A0-002Y-008X0?Description=Dell%20305W%20Power%20Supply&cm_re=Dell_305W%20Power%20Supply-_-9SIAHFJ87C6545-_-Product

Hi @Rickwar,

It looks like you're all squared away on PSU's now with speedstep's links and part #?  The first one you had picked out is for the DT model.